†Thecopsammia Pourtales 1868 (stony coral)
Anthozoa - Scleractinia - Dendrophylliidae
Parent taxon: Dendrophylliidae according to E. I. Kuzmicheva 1987
Sister taxa: Aplopsammia, Areopsammia, Astroides, Balanophyllia, Bathypsammia, Blastozopsammia, Cahuzacopsammia, Calostylopsis, Dendrophyllia, Dichopsammia, Duncanopsammia, Enallopsammia, Endopachys, Heteropsammia, Lamellophyllia, Leptopsammia, Lobopsammia, Makridinophyllia, Notophyllia, Paleoastroides, Reussopsammia, Rhabdopsammia, Rhizopsammia, Spongiopsammia, Stereopsammia, Stichopsammia, Tubastraea, Turbinaria, Wadeopsammia
Subtaxa: Thecopsammia cylindrica
Ecology: stationary intermediate-level epifaunal microcarnivore-photosymbiotic